QSC GXD4 Quick start guide
- Category
- Musical Equipment
- Type
- Quick start guide
This manual is also suitable for
QSC GXD4 is a professional-grade power amplifier that delivers exceptional audio performance and versatility for a wide range of applications. With its advanced features and intuitive controls, it's designed to meet the demands of live sound, fixed installations, and mobile DJ setups.
QSC GXD4 is a professional-grade power amplifier that delivers exceptional audio performance and versatility for a wide range of applications. With its advanced features and intuitive controls, it's designed to meet the demands of live sound, fixed installations, and mobile DJ setups.
GXD Amplifier
Quick Start Guide
EXPLANATION OF TERMS AND SYMBOLS
The term “WARNING!” indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death.
The term “CAUTION!” indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in
damage to the equipment that may not be covered under the warranty.
The term “IMPORTANT!” indicates instructions or information that are vital to the successful completion of the procedure.
The term "NOTE" is used to indicate additional useful information.
The intent of the lightning fl ash with arrowhead symbol in a triangle is to alert the user to the presence of un-insulated "dangerous"
voltage within the product's enclosure that may be of suffi cient magnitude to constitute a risk of electric shock to humans.
The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and operating
and maintenance instructions in this manual.
NOTE:
This Quick Start Guide is based on the basic confi guration as the amplifi er comes from the factory. For detailed instructions for
custom confi gurations refer to the GXD User Guide.
Rack-Mount the Amplifi er
1. Secure the amplifi er in the rack with eight screws (not supplied), four in front, four in back.
— Figure 1 —
TD-000449-00-A
*TD-000449-00*
2
TD-000449-00-A
Connections
Inputs (Channels 1 & 2)
Input Impedance: 40 kΩ Balanced, 20 kΩ Unbalanced
(Figure 2
) See Table 1 for wiring
1. XLR female
2. ¼" female TRS Phone Jack
3. USB Standard B connector - Used for updating the amplifi er fi rmware.
Outputs (Channels A & B)
4Ω or 8Ω impedance
(Figure 3)
1. NL4 – Do not combine the audio outputs in any way. Do not connect the audio outputs to ground.
AC Power
A. Connect the IEC power cord to the AC receptacle on the rear of the amplifi er. (Figure 4)
Controls
See
Figure 5.
1. Channel A clip indicator
2. Channel A signal presence indicator
3. Power Switch/LED on/off
4. Adjust Channel A gain
5. Home – go to Home screen / view Preset screen
6. Enter – select highlighted item and/or confi rm parameter change
7. Exit – return to previous screen and/or undo parameter changel
8. Adjust Channel B gain, select and adjust controls
9. Channel B signal presence indicator
10. Channel B clip indicator
— Figure 6 —
Clip
LED
Clip
LED
Signal
Presence
Routing
Matrix
4-band
PEQ
Delay Limiter MeterGain
High-pass
Filter
Polarity
Low-pass
Filter
D/A
Converter
B
A/D
Converter
Signal
Presence
4-band
PEQ
Delay Limiter MeterGain
High-pass
Filter
Polarity
Low-pass
Filter
D/A
Converter
Crossover
Digital Signal Processing
Shown on
LCD
Front
Panel
Knobs
Front
Panel
LEDs
Front Panel
LEDs
Front Panel
LEDs
Controlled
by Preset
Selection
A
A/D
Converter
Sensitivity
Sensitivity
GXD Amplier Signal Flow
Switched
in DSP
— Figure 2 —
123
POS NEG GROUND
XLR 2 3 1
1/4 TIP RING SLEEVE
— Table 1 —
— Figure 3 —
L
O
C
K
OUTPUTS TO SPEAKERS
CH A
1+ 1-
CH B
2+ 2-
CH B
1+ 1-
L
O
C
K
— Figure 4 —
— Figure 5 —
HOME ENTER EXIT
+
STATUS: OK
34 5 6 7 8
GAIN
P1: ST SAT FULL RANGE
A
B
-100 10.0
1
2
9
10
CLIP
SIG
A
PROCESSING
AMPLIFIER
dB
GAIN/DSP CONTRO
L
CLIP
SIG
B
3
TD-000449-00-A
Setup and Operation
Menu Tree
— Figure 7 —
Preset
Preset Recall
Preset Save
Preset Save As
Stereo DSP
Sensitivity
Crossover
EQ
Delay
Limiter
Utilities
Status
Contrast
Timeout
Lockout
Reset
Key
B
Turn Knob B (or A) Select / Press Adjust
Home Screen
See Figure 8
From any screen
HOME
1. Currently active Preset (location and name)
2. Limit and Clip indicators
3. Output channel letter A and B
4. Output meter A and B (visual)
5. Output Gain (digital) Range = -100 to +10 dB
6. Amplifi er Status
Confi gurations
There are four basic types of confi guration:
• 2-channels in, stereo DSP, 2-channels out (P1 through P7) Figure 31
• 2-channels in, separate DSP, 2-channels out (P8 through P10) Figure 32
• 1or 2-channel in, separate DSP, 2-channels out (P11 through P18) Figure 33
• 1 or 2-channel in, stereo DSP, 2-channels out (P19 and P20) Figure 34
The confi gurations are selected using the Presets. Refer to the GXD User Manual for details on all 20 available Confi gurations.
— Figure 8 —
1
3
4
5
6
P1: ST SAT FULL RANGE
A
B
-100 10.0
STATUS: OK
dB
LIMIT CLIP
2
+
— Figure 9 —
2
ST
DSP
B
1
A
— Figure 10 —
2
DSP
B
1
A
DSP
— Figure 11 —
2
DSP
B
1
A
DSP
— Figure 12 —
2
ST
DSP
B
1
A
4
TD-000449-00-A
Presets
A preset confi gures the inputs and outputs, along with setting the DSP.
There are 20 Presets. See
Figure 9.
From Home
ENTER
1. Previous selection
2. Currently selected
3. Next selection
4. Instructions
Recall a Preset
Recall a preset to confi gure the amplifi er to meet the requirements of your loudspeakers and installation.
There are 20 Presets. See
Figure 10.
1. From Home
ENTER
2. B Preset,
ENTER
3. B Preset Recall,
ENTER
4. B the preset you want,
ENTER
ENTER
Save Preset
Saves the active preset with any DSP changes. See
Figure 11.
1. From Home
ENTER
2. B Preset,
ENTER
3. B Preset Save,
ENTER
ENTER
Save Preset As
Select the Location and/or change the Name to save changes you make to the DSP.
See Figure 12 and Figure 13.
1. From Home
ENTER
2. B Preset,
ENTER
.
3. B Preset Save As,
ENTER
.
4. B Location
ENTER
5. B the Location (p1 to p20),
ENTER
.
6. B Name,
ENTER
.
7. B letter, number, hyphen, or space
ENTER
repeat. When fi nished
EXIT
.
8. B Save,
ENTER
ENTER
.
Stereo DSP (Digital Signal Processing)
The DSP is set for both channels equally, at the same time.
Any changes you make are made in real time – you hear the change as it is being made.
Sensitivity
See Figure 15 through Figure 17.
1. From Home
ENTER
2. B STEREO DSP,
ENTER
.
3.
B Sensitivity,
ENTER
.
4.
B 1.2 V (+4 dBu) or 3.9 V (+14 dBu),
ENTER
.
— Figure 13 —
P1: ST SAT FULL RANGE
ENTER TO SELECT
1
2
STEREO DSP
PRESETS
UTILITIES
3
4
— Figure 14 —
PRESET > RECALL
ENTER TO SELECT
p20: MONO SUBS 100 HZ
2
ST
DSP
B
1
A
— Figure 15 —
P1: ST SAT FULL RANGE
ENTER TO SELECT
PRESET SAVE
PRESET RECALL
PRESET SAVE AS
— Figure 16 —
PRESET > SAVE AS
ENTER TO SELECT
P20: MONO SUBS 100 HZ
LOCATION
NAME SAVE
— Figure 17 —
PRESET > SAVE AS
ENTER: PRESS TO ADVANCE
P20: MONO SUBS 100 HZ
HOLD TO ACCEPT
— Figure 18 —
DSP > SENSITIVITY
SENSITIVITY: 3.9V (+14dBu)
SENSITIVITY: 3.9V (+14dBu)
5
TD-000449-00-A
Crossover and Polarity
See Figure 15 through Figure 17.
1. From Home
ENTER
2. B STEREO DSP,
ENTER
.
3.
B Crossover,
ENTER
.
4.
B HPF,
ENTER
5. B Frequency (Bypass, 20 Hz to 4 kHz),
ENTER
6. B LPF,
ENTER
7. B Frequency (Bypass, 59.8 Hz to 4 kHz),
ENTER
8. B POL,
ENTER
9. B positive (+) or negative (-),
ENTER
HOME
EQ
See Figure 18 through Figure 20.
1. From Home
ENTER
2. B STEREO DSP
ENTER
3. B EQ
ENTER
4. B Band 1, 2, 3, or 4
ENTER
5. B Gain,
ENTER
6. B Gain (-12 dB to +12 dB),
ENTER
7. B Frequency,
ENTER
8. B Frequency (20 Hz to 20 kHz),
ENTER
9. B BW (bandwidth),
ENTER
10. B BW (0.1 Octave to 3.0 Octave),
ENTER
HOME
Delay
See Figure 21
1. From Home
ENTER
from the Home screen.
2. B STEREO DSP, press
ENTER
.
3. B Delay,
ENTER
.
4. B Delay (0.00 to 56.30 ft, or 17.16 m, or 50 ms),
ENTER
HOME
.
Limiter
See Figure 22
1. From Home
ENTER
2. B STEREO DSP,
ENTER
.
3. B Limiter,
ENTER
.
4. B Type,
ENTER
.
5. B Mild, Medium, or Aggressive
ENTER
.
6. B Power,
ENTER
.
7. B Power (see Table 2),
ENTER
.
8. B Impedance (4 or 8 Ohms),
ENTER
HOME
.
— Figure 19 —
XOVER > HIGHPASS
FREQUENCY: 60 Hz
HPF
POL LPF
0
-6
— Figure 20 —
XOVER > LOWPASS
FREQUENCY: 2000 Hz
0
HPF
POL LPF
-6
— Figure 21 —
XOVER > POARITY
POLARITY: +
HPF
POL
LPF
+
— Figure 22 —
BAND 1 > GAIN
GAIN: 8.0 dB
12
0
-12
— Figure 23 —
BAND 1 > FREQ
FREQUENCY: 1200 Hz
12
0
-12
— Figure 24 —
BAND 1 > BW
BANDWIDTH: 0.4 OCT
12
0
-12
— Figure 25 —
DSP > DELAY
DELAY: 8.48 MS
DELAY: 7.27 Ft
DELAY: 2.22 M
DELAY: 8.48 ms
— Figure 26 —
DSP > LIMITER
TYPE: MEDIUM
TYPE
POWER IMP
TYPE:MEDIUM
POWER:400W
IMPEDANCE:8
Model 4Ω 8Ω
GXD4
5 W – 600 W 5 W – 400 W
GXD8
5 W – 1200 W 5 W – 800 W
— Table 2 —
6
TD-000449-00-A
Utilities
Status
See Figure 23
1. From Home,
ENTER
2. B Utilities,
ENTER
3. B Status
ENTER
a. Amp Total Run Time - Hours (HH:MM:SS)
b. Hardware - the version of the hardware unit
c. Firmware - the version of the fi rmware installed on the amplifi er
4. When fi nished,
HOME
Contrast
See Figure 24
1. From Home,
ENTER
2. B Utilities,
ENTER
3. B Contrast
ENTER
.
4. B Contrast (0 to 10)
ENTER
HOME
Timeout
See Figure 25
1. From Home,
ENTER
2. B Utilities,
ENTER
3. B Timeout
ENTER
.
4. B Timeout (NEVER, 30 Seconds, 1 Minute, or 5 Minute)
ENTER
HOME
Lockout
See Figure 26 through Figure 28
1. From Home,
ENTER
2. B Utilities,
ENTER
.
3. B Lockout
ENTER
.
4. B Unlock, Lock Processing, or Lock All
ENTER
.
5. B Unlock, Lock Processing, or Lock All
ENTER
HOME
.
Reset
1. From Home,
ENTER
2. B Utilities,
ENTER
.
3. B Reset
ENTER
.
4. B Factory Reset
ENTER
ENTER
.
— Figure 27 —
UTILITIES > STATUS
AMP TOTAL RUN TIME:
12:42:5 HRS
HARDWARE: V3
FIRMWARE: V1.0.34
— Figure 28 —
UTILITIES > CONTRAST
CONTRAST TEST
CONTRAST: 10
CONTRAST TEST
— Figure 29 —
UTILITIES > CONTRAST
TIMEOUT: 1 MINUTE
TIMEOUT CAN EXTEND THE
LIFE OF THE DISPLAY
TIMEOUT: 1 MINUTE
— Figure 30 —
UTILITIES > LOCKOUT
AMP: LOCK ALL
UNLOCK
ALL FUNCTIONS WILL BE
AVAILABLE FOR EDITING
— Figure 31 —
UTILITIES > LOCKOUT
AMP: UNLOCKED
LOCL DSP
ALL DSP FUNCTIONS WILL
NOT ALLOW EDITING
— Figure 32 —
UTILITIES > LOCKOUT
AMP: UNLOCKED
LOCK ALL
ALL FUNCTIONS INCLUDING
GAIN WILL BE UNEDITABLE
— Figure 33 —
UTILITIES > RESET
ALL PRESETS AND
SETTINGS WILL BE
RESTORED TO DEFAULT
ENTER TO RESET
FACTORY RESET
— Figure 34 —
UTILITIES > RESET
ALL PRESETS AND
SETTINGS WILL BE
RESTORED TO DEFAULT
ENTER TO CONFIRM
FACTORY RESET
7
TD-000449-00-A
Mailing Address:
QSC Audio Products, LLC
1675 MacArthur Boulevard
Costa Mesa, CA 92626-1468 USA
Telephone Numbers:
Main Number: (714) 754-6175
Sales & Marketing: (714) 957-7100 or toll free (USA only) (800) 854-4079
Customer Service: (714) 957-7150 or toll free (USA only) (800) 772-2834
Facsimile Numbers:
Sales & Marketing FAX: (714) 754-6174
Customer Service FAX: (714) 754-6173
World Wide Web:
www.qsc.com
E-mail:
© 2014 QSC Audio Products, LLC. All rights reserved. QSC and the QSC logo are trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark offi ce and other
countries. All other trademarks are the property of their respective owners. Patents may apply or be pending.
http://patents.qsc.com.
If you would like a full copy of the GXD User manual, visit the QSC Audio Products website at www.qsc.com, or contact
Customer Service +1 714 957-7150 or toll free (USA only) (800) 772-2834 to receive a copy by mail.
Si desea obtener una copia completa del manual del usuario de la GXD, visite el sitio web de QSC Audio Products en www.
qsc.com, o póngase en contacto con el Servicio al Cliente al +1 714 957-7150 o sin costo (sólo en EE.UU.) al (800) 772-2834
para recibir una copia por correo.
Pour obtenir un exemplaire complet du manuel d’utilisation de la GXD, allez sur le site Web QSC Audio Products à www.
qsc.com ou contactez le service clientèle au +1 714 957-7150 ou au (800) 772-2834 (numéro vert - USA seulement) pour
recevoir un exemplaire par courrier.
Ein vollständiges Exemplar des Benutzerhandbuchs für die GXD fi nden Sie auf der QSC Audio Products-Website unter www.
qsc.com. Sie können sich unter +1 714 957-7150 oder unter der (nur in den USA) gebührenfreien Nummer +1 (800) 772-
2834 auch an den Kundendienst wenden, um sich ein Exemplar zuschicken zu lassen.
如果您需要 GXD 产品用户手册的完整副本，请访问 QSC 音频产品网站 www.qsc.com，或致电客户
服务部门 +1 714 957-7150，或拨打免费电话（仅限美国）(800) 772-2834 通过邮件获取副本。
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QSC GXD4 Quick start guide
- Category
- Musical Equipment
- Type
- Quick start guide
- This manual is also suitable for
QSC GXD4 is a professional-grade power amplifier that delivers exceptional audio performance and versatility for a wide range of applications. With its advanced features and intuitive controls, it's designed to meet the demands of live sound, fixed installations, and mobile DJ setups.
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